Arrows Header (71485MI) O2 Sensor ?

[rmack_imp]

Hi Everyone,
I have a Dynojet AutoTune AT-200 which comes with a BOSCH O2 Wideband Sensor ( M18 Thread ). Unfortunately our Bikes use M12. I have an aftermarket Titanium Header (MotoGear Black Ti from Mr. T) and really would like to avoid welding a M18 Bung, which obviously would be a pain ... Just think about TI Welding and Black paint ..... Yikes

Does anyone know if the Arrows Header has a M12 or M18 for the O2 Sensor

thank you very much in advance

hey mate the arrow headers have a 12mm , i welded a 18 adapter for the auto tune onto the pipes and all good , you will be very happy with these pipes cheers rod